Staple



' (No Modem S. FROST.

STABLE. I

Patented-Mar.27,1883.

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UNITED STATES s'riLEs Enosr, or BOSTON, MAssAoEiUsE'rrs.,

ylillrrEN'fr OFFICE. i

, STAPLE.

SPECIFICATION forming part of Letters Patent No. 274,481, dated March 27, 1883.

Application filed November 15, 1882. (No model.)

vTo all Iwhom 'it may eminem Be it known that l, S'riLEs FROST, of Boston, inthe county l' Suffolk and State ofMassachusetts, have invented certain Improvements in Staples, of which the ibllowing is a. full, clear, and exact description, reference being had to the accompanying drawings, making port of this specification, inwliich Figures 1, 2, and 3 represent staples constructed in accordance with my invention. Fig. et is a. section on the line w at' of Fig. 1. Fig. 5 is a. section on the linep/ y of Fig. 3. Figs. 6 and 7 show the position givento two Vof my improved staples when driven into a piece ot wood.

To provide a. stnpleot' such form as willendow it with. the ability ot' tenaciously holding its place (without elinohing) in the wood-k work in which it is driven, by increasing its resistance to withdrawal, is the object of my present invention, which consists in u staple having the bottom of each of its legs bev- @led to a point from its inside down to its outside, in combination with one or more notches formed on the inside or outside, or both inside end ontside,of the portion of each leg which enters the wood, the said beveling outwardly' of the bottoms of the-legs insuring the spreading apart of the suine, and the notches increasing the amount ofsurt'zice of the legs in Contact with the wood, and offering greater resistance to its bers when the staple `is withdrawn, and practically locking it in its desired position.

To enable others skilled in the art to uuderstand and use my invention, I will proceed to describe the manner in which I have car ried it out.

ln the said drawings is represented a. rod of wire bent at its middle to form a. staple, A, having either a curved or flat loop or head, u., as desired. rlhe lower ends or bottoms of the parallel legs l) b are beveled on their inner sides, c c, in en outward and downward` direction from c to d, leaving the outer line,

d, of each leg nnchauged-'z. e., continuously streight or unbroken from its point, d, to where it unites with the looped portion or head a--the legs of a, staple so formed when driven into a piece of wood-work entering it readily and parting its iibers or grain with n wedge-like action, said legs separating from each other in the plane passing through their to oppose greater resistance to its withdrawal than were the bottoms of the legs of the Ordinary construction-fi. c., simply terminating at points centrally located or beveled uniformly downward from ull points of their peripheries.

To`stll fnrther'inorease the ability of the staple to resist withdrawal, l provide the por tion ot' each leg which enters the woodwith one or more square notches or shoulders, h, either on the inside c und outside d, as shown in Fig. 1, or on the outside d. only, Fig. 2, or on the inside c only, Fig. 3, by which construction the grain or fibers of the wood are divided and crowded to each side as thelegs enter, after which the fibers close in and around the notches 11., (see Figs. (i and 7,) thus firmlyvv embedding the legs ofthe staple and causing it to tenaciously hold its position against unusual force employed to withdraw it, the conibined features-i. e., the lieveling outwardly ot' the inner sides of the bottoms ofthe legs and the notches located between them and the loops or heed 1 -creating a. bond between the staple and wood so tenacious that the former cannot be withdrawn so long as the cohesion ofthe surrounding fibers otA the wood remains unbroken. Where the diameter of the staple wire or rod is smell and the wood hard, the beveled points of the staple, when driven thereinto, curve, :is seen in Fig. 7.'

As al new article of manufacture, e staple,

A, having the inside c of the bottom Ot' each legb vbeveled downward and outward from c to a point, d, and the portion of each leg which is to enter the wood provided with one or more notches or shoulders, h, on its outside d and inside c, or on either its outside or inside only, in order to enable the legs of the staple to sepa-rate from each other in the plane passing through their centers, and to ati'ord an increased amount of fiber-resisting surface to opA pose the force which is applied to withdraw it, substantially as described.

XVituess my hand this 8th day of November, 1882.

STI LES FROST.

l centers, (see Fig. 6,) which enables the staple IOO 

